Motorola XU1100 User Manual page 6

Changes or modifications not expressly approved by Motorola may void the user's
authority granted by the FCC to operate this radio and should not be made. To
comply with FCC requirements, transmitter adjustments should be made only by
or under the supervision of a person certified as technically qualified to perform
FCC
transmitter maintenance and repairs in the private land mobile and fixed services
as certified by an organization representative of the user of those services.
Replacement of any transmitter component (crystal, semiconductor, etc.) not
authorized by the FCC equipment authorization for this radio could violate FCC
rules.
Note: Use of this radio outside the country where it was intended to be distributed
is subject to government regulations and may be prohibited.
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